import UIKit

// Ends:    when both fingers have lifted
@available(iOS 3.2, *)
extension QKC where AA :UIPinchGestureRecognizer {
		// scale relative to the touch points in screen coordinates
    open func scale_qk_s(_ scale:  CGFloat ) -> QKC<AA,YY,ZZ, CGFloat >{
		return link(next: scale).then_QK { $0.value.scale = scale }
	}
    open func scale_qk_g() -> QKC<AA,YY,ZZ, CGFloat >{
		 self +^ self.value.scale
	}

		// velocity of the pinch in scale/second
    open func velocity_qk_g() -> QKC<AA,YY,ZZ, CGFloat >{
		 self +^ self.value.velocity
	}

}

